Why aqueous naoh solution drop wise to the copper solution
What pH must be exceeded before Cu (OH)2 begins to precipitate? The Ksp for Cu(OH)2 is 1.6X10^-19. A student transfers 175.0mL of 0.065 M Cu(NO3)2 to a beaker and then adds aqueous NaOH solution drop wise to the copper solution.
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The student heated a sample of the blue solution. After a short time, the solution changed from blue to green. Is the forward reaction endothermic or exothermic? Briefly explain.
An object of 2 cm is positioned 6 cm in front of a convex mirror that consists of a focal length of 5.0 cm. Determine the features of the image generated by: i) Drawing a ray diagram
Determine the numbers of grams of Mg(OH)2 can be dissolved in the 800mL of an aqueous buffer of pH= 8.5. The Ksp of Mg (OH)2 = 5.6 X10^-12
A soap film of n = 1.33 is 476 nm thick and lies on a glass plate of n = 1.52. Sunlight, whose wavelengths in vacuum expand from 380 to 750 nm, travels via the air and hits the film perpendicularly. For which wavelength (s) in this range does dest
The object at rest on a flat, horizontal surface explodes into two fragments, one seven times as huge as the other. The heavier fragment slides 6.50m before stopping. Determine how far does the lighter fragment slide?
2.50 M NaOH is titrated with 65.0mL of 1.75M HBr. The HBr is in a beaker and the NaOH is added from the burette in an acid-base titration. Determine the solution in the beaker after: a.) 15.0mL of NaOH have been added. b.)60.0mL of NaOH have
From a distance of 170 m, the eagle sees them as one unresolved object and dives toward them at a speed of 16 m/s. Suppose that the eagle’s eye detects light that consists of a wavelength of 550 nm in vacuum. Determine how much time passes u
A kinetics study was done to determine the rate law for reaction (1) by carries out trials where aqueous solutions supplying A, E and L were combined, and the time in seconds required for the disappearance of all L added was measured. All trials w
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